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Ghasemi, M. H., Korayem, A. H., Nekoo, S. R., Korayem, M. H.. (1395). Improvement of position measurement for 6R robot using magnetic encoder AS5045. فناوری آموزش, 6(1), 11-20. doi: 10.22061/jcarme.2016.517
M. H. Ghasemi; A. H. Korayem; S. R. Nekoo; M. H. Korayem. "Improvement of position measurement for 6R robot using magnetic encoder AS5045". فناوری آموزش, 6, 1, 1395, 11-20. doi: 10.22061/jcarme.2016.517
Ghasemi, M. H., Korayem, A. H., Nekoo, S. R., Korayem, M. H.. (1395). 'Improvement of position measurement for 6R robot using magnetic encoder AS5045', فناوری آموزش, 6(1), pp. 11-20. doi: 10.22061/jcarme.2016.517
Ghasemi, M. H., Korayem, A. H., Nekoo, S. R., Korayem, M. H.. Improvement of position measurement for 6R robot using magnetic encoder AS5045. فناوری آموزش, 1395; 6(1): 11-20. doi: 10.22061/jcarme.2016.517

Improvement of position measurement for 6R robot using magnetic encoder AS5045

Journal of Computational & Applied Research in Mechanical Engineering (JCARME)
مقاله 3، دوره 6، شماره 1 - شماره پیاپی 11، شهریور 2016، صفحه 11-20    اصل مقاله (2.85 M)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22061/jcarme.2016.517
نویسندگان
M. H. Ghasemi؛ A. H. Korayem؛ S. R. Nekoo؛ M. H. Korayem*
Robotic Research Laboratory, Center of Excellence in Experimental Solid Mechanics and Dynamics, Faculty of Mechanical Engineering, Iran University of Science and Technology, 1684613114, Tehran, Iran
تاریخ دریافت: 21 دی 1393،  تاریخ بازنگری: 17 فروردین 1395،  تاریخ پذیرش: 29 فروردین 1395 
چکیده
Recording the variation of joint angles as a feedback to the control unit is frequent in articulated arms. In this paper, magnetic sensor AS5045, which is a contactless encoder, is employed to measure joint angles of 6R robot and the performance of that is examined. The sensor has a low volume, two digital outputs and provides a high resolution measurement for users; furthermore its zero position is adjustable.  Installation and use of this measurement system on 6R robot has been expressed by using output signals of sensor AS5045 in the digital control board of 6R and equipped with ARM processor LPC1768. First, a sample of digital board is used for controlling a DC motor in both speed and position, in order to investigate specifications of AS5045’s digital and analogue outputs. Simulation of 6R robot in point-to-point motion has been performed with MATLAB software using a proportional derivative (PD) controller. Then, experiment with the same condition and gains via a PD controller has been designed and implemented on the digital control board. The feedback system has been also checked in a circular path to show its advantages in trajectory tracking. The comparison of simulation results with experiments shows improvement: less error and better performance of 6R robot. This new setup omitted the noise of previous analogue feedback system since its digital outputs provides a precise measurement.
کلیدواژه‌ها
Magnetic sensors؛ 6R robot؛ Joint angle؛ PD controller
مراجع
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